williams



E. T. WILLIAMS. Am cooLED coNnENsE Fon nEFmGEnMmG MAcHmEs.

APPLICATION FILED JULY 6| l9l6.

Patented Allg. 19, 1919.

31, mommy miwm rnonrsoiv winning, oir NEW Yoax, iv. Y.

AIB-COOLED CON'DENBEB FOR BEFBIGERATING-MACHINES.

Bpecication n1 Letters Patent.

Patented Aug. 19, 1919.

appiimiun mea my e. 191s. sei-iai no. 107.125.

To all whom it may concern:

Beit known that I, EDWARD T. WiLuAMs, residing at New York, N. Y., have invented certain new and useful Im rovements in Air-'Cooled Condensers for fri erating-4 Machines, of which the following is a full, clear, and exact description.

This invention relat to refrigerating machines operating on the usual principle, in which a gas is alternately liquefied in a suitable condenser and expanded into d .n expansion chamber or coil. In liquefying a gas (ethyl chlorid, for example) the heat which kept it in gaseous form is liberated and must be got rid of in some way, the common practice being to absorb it by means of water passed through cooling coils. In some situations this plan is not practicable because of insuflicient water supply, as for example i'n dry regions, on railway dining cars, etc. It is accordingly the object of the presentinvention to provide a refrigerartng machine in which the condenser is air-cooled, the heat beingabsorbed and carried oli'l b'y a current of air created in any convenient manner. Another object is to provide a small and compact machine for household use, on railwa dining cars, and in other places where a. arge machine would be impracticable. To these and other ends the invention consists iii the novel features and combinations. hereinafter described.

I have selected for illustration and specific descri tion herein a. form of the invention intendJed particularly for railwa use, 'but it is to 'be understood that the inven- .tion is not limited in that regard. I have also shown it embodied in a machine of the general type described in my prior Patents Nos. 1,164,689 and 1,165,926, dated Dm ber 21, and 28, 1915, respectively, but it can be embodied in other types as well.

The accompanying drawing is diagrammatic in character and shows the machine in verticaly section.

The compressor 10, preferably of the rotary type, is inclosed in a pump-chamber 11, and maybe submerged in water or other cooling liquid 12 to absorb heat liberated in the com ressor, as in my prior patents mentioned ve. The compressor is driven byV an external motor 13, the driving connection being made across a well 14 whichmay contain glycerin or other lubricant for the working parts ofl the compressor, the lubri` cant being supplied to such parts through suitable passages not shown. In the upper part of the er1pump-chamber is a receptacle The latter flows out.'

15 orliqu ed gas. through a pipe 16 to the expansion valve 17., where 1t. is expanded into the expansion coils 18. In expanding, the gas absorbs heat from the contents of the refrigeratoi 1,9 on which the machine is set and in which the expansion chamber or coils are located. From the expansion coils the expanded gas goes back to the low pressure side of the pump 10, as compressed, and is discharged from the high pressure Side through pipe 20 into the rece tacle 15.

The receptac e orliquid-gas-reservoir 15 is closed by a lid or Vclosure 21, and above is a housing or flue 22 containing cooling coils 23, the inlet end of which is open to the chamber or receptacle 15 above the liquefied gas therein while its end extends down into the liquid. If desired, the receptacle may be provided with a partition 21", depending from the closure 2'1 below the surface of the liquefied gas and between thetwo ends of the cooling pipe 23. In such case the outlet end of the pi need not extend into the body of lique ed gas in the receptacle. In this pipe 23 the compressed gas is cooled to the point of liquefaction and is delivered by gravity tothe reservoir 15.

For the purpose of creating a suitable current of air through the housing 22 to take up and carry off the heat radiated from the coils 23 the housing may be provided with a vertical flue 24. If the draft thus produced is not sufficient for the purpose a fan may be employed. In such -case I prefer to make the air-inlet in tubular form, 25, and put the fan therein, as shown at 26. The fan may be driven in any convenient manner, as by means of a belt 2? from the motor 13. Above the flue 424 is a cowl or hood 27 to carry the warmed air tothe outer atmosphere, say through the car roof 28. The cowl is preferably rotatable, and provided with a vane 29 so as to keep its discharge openin out of the wind and, in the case of a rai way car, to keep the cowl turned toward the rear as respects the direction of the cars motion. Thisinsures that the flow of air u wardly through the housing 22 will be he ped, rather than hindered, by the wind and the movement of the car.

As stated above, the invention is n ot limited to the construction herein described but can be embodied in other forms without departure from its spirit.

I claim 1. In a rcfrigeratinglmachine, in comblnation, a lump-chamber having a receptacle for lique ed gas, a compressor arran ed 1n the pump-chamber, a cooling cham er .or housing mounted on the pump-chamber and above said receptacle, a condensing coil arranged in the housing, to receive com ressed gas and deliver the same in liquid orm to said receptacle, and means for lcreating' a and current of air through the housinlg 1 t e gas about said condensing coil to coo therein. Y

2. In a refrigerating machine, in combination, a pump-chamber having a receptacle for liquefied gas, a compressor 1n the pumpchamber, a cooling chamber or housing mounted' on the pump-chamber above the said reoeptacleand having a vertical iiue extending from its upper portion and an air-admission opening 1n its lower portion, and a condensing coil arranged in said housin receivin gas from the compressor ,and de ivering t e same to the receptacle for liquefied gas.

3. In a refrigerating machine, in combination, a ump-chamber having a receptacle for lique ed gas, a compressor 1n the pump,-

chamber, a condensing coil above the pump-- chamber, receiving gas Vfrom the com ressor and deliverin the same to the lique ed-gas receptacle, a ousing inclosing the condensing coil and having an outlet at its top, and

a blower arran ed to blow air into the lower portion of the ousing.

4: In a refrigerating machine, in combination, a ump-chamber having a receptacle for llque ed gas, a cmnpressory 1n the pumpchamber, a condensing coil receiving gas yfrom the compressor and delive' the same to the li ueiied as receptacle, a ousing inclosing t e con ensing coil, having Aan.`

air-admission'openin in its lower portion a vertical iue exten ing from the top of the housing, and a rotaryY elbow-cowl at the top of the ue, provided with a vane to keep the elbow of the cowl out of the wind.

5: In a refrigerating machine, in combination, a pump-chamber havin invits upper part a transverse receptacle or liquelied gas, a com ressor in thelower portion of the pump-c amber Vbelow the liquefied-gas receptacle, a condensing coil above the pump-chamber, receivin gas from the compression and delivering t e 'same to the liqueed gas rece tacle and having an air-outlet at its bop, a lower at the lower part of the housing to blow air into the Same, and a motor connected with the compressor and the blower to drive both. n

6. In a refrigeratin machine, in combination, a pump chaml rr, a compressorin Ic i hmby bmied um. in Lamu Ponent No. 1,313,363, grund vAugut 19, 1919, upon the nppioation o! EdwardThompsonA Williams, of New York, N. Y., for

n impmemm in "Air-coma' condemn for Renaming-Mmmm from .ppm in the prima spwiiition requiring @motion u follows: nge 2, 1in@ 7a, claim 6, for the word coil rend. duambm'aame page and claim, line 74, for the word "chamba" ma wiz,- md um um nid mm ramt should be ma with those corrections therein tlist tho moy conform to the record of the ono in the Patent.' Omoo.

sigma ma ...1.a ahi mn agg): Wm, A. 11,1919.

M. H. GOULSTON,

Oomniuioncr-of Pauw. 

